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US20030077137A1 - Drill - Google Patents

Drill Download PDF

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Publication number
US20030077137A1
US20030077137A1 US10/016,889 US1688901A US2003077137A1 US 20030077137 A1 US20030077137 A1 US 20030077137A1 US 1688901 A US1688901 A US 1688901A US 2003077137 A1 US2003077137 A1 US 2003077137A1
Authority
US
United States
Prior art keywords
spindle
socket
collar
radially
drill
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US10/016,889
Other languages
English (en)
Inventor
Gunter Rohm
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Roehm GmbH Darmstadt
Original Assignee
Roehm GmbH Darmstadt
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Roehm GmbH Darmstadt filed Critical Roehm GmbH Darmstadt
Assigned to ROHM GMBH reassignment ROHM GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ROHM, GUNTER HORST
Publication of US20030077137A1 publication Critical patent/US20030077137A1/en
Abandoned legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/12—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for securing to a spindle in general
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/94—Tool-support
    • Y10T408/95—Tool-support with tool-retaining means

Definitions

  • the present invention relates to a drill. More particularly this invention concerns a drill for a quick-release chuck.
  • a standard drill chuck comprises a chuck body centered on and rotatable about an axis and formed with a plurality of mangled guides spaced about the axis and each holding a respective jaw.
  • Rear edges of the jaws have rows of teeth meshing with an internal screwthread of a tightening sleeve that can be rotated in one direction to advance the jaws axially and bring them together radially so as to grip a tool and in the opposite direction to separate the jaws and release the tool.
  • Means may be provided to lock the tightening sleeve to prevent unwanted loosening of the chuck.
  • the chuck body is formed with an axially rearwardly open threaded bore into which fits an externally threaded spindle of a drive unit.
  • the two parts are screwed together under substantial torque so that the chuck stays solidly mounted even under the considerable angular forces that it is subjected to in normal use.
  • a radial set screw is fitted to the body and engages the spindle to angularly lock the parts together even more solidly.
  • Another object is the provision of such an improved drill chuck which overcomes the above-given disadvantages, that is which can easily be removed from and replaced on a drill spindle.
  • a drill has according to the invention a drive spindle centered on and rotatable about a spindle axis and formed centered on the axis with an axially forwardly open socket of noncircular section and with at least one radially throughgoing passage open radially inward into the socket.
  • a locking element is radially displaceable in the passage between an inner position projecting radially inward into the socket and an outer position clear of the socket and projecting radially outward from the spindle.
  • a collar is formed with an inner surface closely juxtaposed with an outside surface of the spindle and with a radially inwardly open recess. The collar is axially displaceable on the spindle between a locked position with its inner surface pressing the element into the inner position and an unlocked position with its recess level with the element and the element movable into the outer position engaged in the collar recess.
  • Such a drill can be used, when the socket is of a standardized, by chucking the standard-shank tool directly in the spindle of the drill.
  • standard hex-shank drill bits, driver bits, and the like can be chucked directly.
  • the collar recess has angled flanks engageable with the element.
  • a spring can be braced between the spindle and the collar urging the collar into the locked position.
  • a knockout rod axially displaceable in the spindle is axially engageable into the socket.
  • a spring urges the knockout rod outward into the socket.
  • a second locking element can be radially engageable with the knockout rod and with the collar.
  • the second locking element is movable out of engagement with the knockout rod on displacement of the collar into the unlocked position.
  • the spindle is formed with a second radially extending passage level with the knockout rod and holding the second locking element and the knockout rod is in turn formed with a radially outwardly open recess in which the second element is radially engageable in the locked position of the collar.
  • the spindle prefferably has an outer part forming the socket and an inner part.
  • the outer and inner parts are threaded together.
  • the outer part can in effect be an adapter that fits to an existing threaded-spindle drill, giving it the quick-change advantages of the instant invention.
  • the spindle is formed with a plurality of the passages each receiving a respective one of the locking elements.
  • the recess of the stem is a radially outwardly open groove.
  • the elements can be balls for a very solid multipoint hold of the spindle on the tool inserted in its socket.
  • the spindle To center the tool held in the socket, it is formed with a rotation-symmetrical surface portion centered on the spindle axis. This surface can be formed in the socket or on the outside of the spindle.
  • the spindle In addition to transmit axial force from the spindle to the tool in the socket, the spindle has a planar axially directed face lying in a plane perpendicular to the axis. This face is typically formed at an outer end of the spindle.
  • FIGS. 1 and 2 are side views partly in axial section through a chuck according to the invention in mounted and unmounted condition;
  • FIGS. 3 and 4 are views like FIGS. 1 and 2 of a second chuck in accordance with the invention.
  • FIGS. 5 and 6 are views like FIG. 1 of third and fourth chucks according to the invention.
  • FIGS. 7 and 8 are views like FIGS. 1 and 2 of a fifth chuck in accordance with the invention.
  • a drill 1 comprises a chuck 3 and a drive unit 2 .
  • the chuck 3 is mounted on a drill spindle 4 of the unit 2 for rotation about an axis 28 on which the spindle 4 is centered.
  • the chuck 3 is centered on an axis 6 normally coaxial with the spindle axis 28 and has a body 5 formed with three angled guides 7 each holding a respective slidable jaw 8 having a toothed rear edge 9 meshing with an internal screwthread of a tightening ring 10 .
  • a tightening sleeve 11 is connected via a coupling sleeve 12 to the ring 10 and a locking mechanism 13 is provided for preventing unwanted rotation of the ring 10 relative to the body 5 .
  • Rotation of the sleeve 13 with the ring 10 in one direction about the axis 6 moves the jaws 8 axially forward (down in FIGS. 1 and 2) and together to grip a tool or workpiece and opposite rotation spreads them to dechuck the tool or workpiece. This is all generally standard and well known in the art.
  • the chuck body 5 has an axially centered and rearwardly projecting shaft or stem 14 which is at least partially of nonround, here hexagonal, section and that fits into an axially forwardly open blind bore or socket 15 of complementary shape and section formed at a front end of the spindle 4 .
  • stem 14 is fitted to the socket 15 , the body 5 is rotationally locked to the shaft 4 .
  • the stem 14 is formed with a radially outwardly open recess or groove 16 into which can engage a plurality of locking elements or balls 18 received in respective radial passages 17 formed in the end of the spindle 4 .
  • the wall thickness of this end of the spindle 4 is smaller than the diameter of the balls 18 so that they must project either radially outward or inward from the respective passages 17 which therefore are shorter than the diameters of the balls 18 .
  • the spindle 4 is surrounded by an axially slidable locking collar 19 formed with a radially inwardly open recess or groove 22 that can be moved into a position axially level with the balls 18 , but otherwise a cylindrical inner surface of this collar 19 lies snugly against a cylindrical outer surface 29 of the end of the spindle 4 and normally forces the balls 18 to project radially inward from the inner surface of the bore 15 .
  • a spring 21 braced axially between a forwardly directed shoulder 20 of the spindle 4 and a rearwardly directed shoulder 24 of the collar 19 urges the collar 19 forward into a locked position with the groove 22 offset axially forward and the balls 18 projecting into the bore 15 .
  • a thin-wall sheet-metal sleeve 27 carried on the rear end of the chuck body 5 is also urged axially forward by a spring 38 and can bear axially rearward on the collar 19 which has an outside formation 23 adapted to be grasped by the fingers of the user of the tool.
  • the chuck body 5 is formed with a rearwardly open annular seat having a cylindrical inner wall 30 that can fit snugly with the cylindrical outer wall 29 of the end of the spindle 4 and that is formed by a rearwardly projecting and axially centered collar 31 formed on the body 5 .
  • the spindle 4 and chuck body 5 have axially flatly engageable and planar annular surfaces 32 that allow substantial axial pressure to be transmitted from the chuck body 5 back to the spindle 4 , while the interfitting surfaces 29 and 30 keep these two parts perfectly centered on each other and maintain the axes 6 and 28 coaxial.
  • the spindle 4 holds an axially displaceable knockout rod 25 urged axially forward by a spring 26 into engagement with the rear end of the stem 14 which here is shown having at its rearmost end a cylindrical surface 29 ′ slidable in a cylindrical surface 30 ′ at the rear end of the bore 15 .
  • a radially outwardly open recess or groove 34 on the knockout rod 25 can receive inner ends of radially displaceable locking elements 33 that can also engage, like the balls 18 , in a radially inwardly open groove or recess 35 of the collar 19 .
  • the elements 18 and 33 are pressed radially inward to lock the stem 14 in place as described above and to lock the knockout rod 25 in a rear position.
  • the collar 19 is moved into the rear unlocking position shown in FIG. 4, the stem 14 is first freed by the balls 18 as described above and then the knockout rod 25 is similarly freed to press axially forward with the force of the spring 26 on the rear end of the stem 14 , urging the chuck 3 off the spindle 4 .
  • the stem 14 ′ is not unitary with the chuck body 5 , but instead is a separate piece screwed centrally from the rear into the body 5 .
  • the surfaces 32 are formed by the end of the stem 14 and the floor of the socket 15 . Otherwise this system is identical to that of FIGS. 1 and 2.
  • FIG. 6 shows an arrangement where the spindle 4 is formed with a rearwardly open seat 37 that is fitted to a threaded front end 39 of a drill spindle 36 .
  • this system can be adapted to a standard threaded-spindle drill unit.
  • the finger formation 23 is formed as a radially outwardly projecting ridge, not as a radially outwardly open shallow groove as in FIGS. 1 through 5.
  • the spindle part 4 ′ is also separate from joined to the stem 36 of the drive unit somewhat as in FIG. 5.
  • the stem 14 ′ is integrally joined to but not unitary with the chuck body 5 .
  • FIGS. 7 and 8 is a hybrid of the systems of FIGS. 1 through 6, with a knockout rod 25 and a separate spindle part 4 ′.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Drilling And Boring (AREA)
  • Gripping On Spindles (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
US10/016,889 2001-10-23 2001-12-14 Drill Abandoned US20030077137A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10151582A DE10151582B4 (de) 2001-10-23 2001-10-23 Bohrmaschine
DE10151582.0 2001-10-23

Publications (1)

Publication Number Publication Date
US20030077137A1 true US20030077137A1 (en) 2003-04-24

Family

ID=7703009

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/016,889 Abandoned US20030077137A1 (en) 2001-10-23 2001-12-14 Drill

Country Status (7)

Country Link
US (1) US20030077137A1 (de)
JP (1) JP2003175409A (de)
CN (1) CN1258422C (de)
CZ (1) CZ20023487A3 (de)
DE (1) DE10151582B4 (de)
GB (1) GB2381226A (de)
TW (1) TW568805B (de)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040004329A1 (en) * 2002-07-08 2004-01-08 The Boeing Company Quick change chuck
US20060061048A1 (en) * 2004-09-20 2006-03-23 Daniel Puzio Tool chuck with power take off feature
US20070132196A1 (en) * 2005-04-19 2007-06-14 Daniel Puzio Tool chuck with power take off and dead spindle features
US20070158086A1 (en) * 2005-09-16 2007-07-12 Daniel Puzio Chuck with internally threaded jaw in a pto application
US20070170664A1 (en) * 2005-09-16 2007-07-26 Daniel Puzio Pto selector mechanism for parallel axis transmission
US20070170665A1 (en) * 2005-09-16 2007-07-26 Daniel Puzio Dead spindle pto with compliant grounding mechanism
US20070187908A1 (en) * 2005-09-16 2007-08-16 Daniel Puzio Pto selector mechanism with brake
EP2554319A1 (de) * 2011-07-06 2013-02-06 Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) Vorrichtungen für Austauschen einer Schweißspitze ; und Verfahren zum Austauschen einer Schweißspitze
US20140346744A1 (en) * 2012-11-15 2014-11-27 Robert Bosch Gmbh Tool attachment for a hand-held machine tool
US10442009B2 (en) 2017-01-31 2019-10-15 Black & Decker Inc. Drill with removable chuck
WO2024234217A1 (en) * 2023-05-15 2024-11-21 Jacobs Chuck Manufacturing (Suzhou) Company Ltd. Chuck with quick connect spindle interface

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006072145A1 (en) * 2005-01-07 2006-07-13 Eastland Medical Systems Ltd Locating means
US7478979B2 (en) * 2005-04-27 2009-01-20 Eastway Fair Company Limited Rotatable chuck
DE102015106162A1 (de) * 2015-04-22 2016-10-27 Röhm Gmbh Präzisionsspannsystem

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1377663A (en) * 1919-11-17 1921-05-10 William E Brown Chuck
DE8901367U1 (de) * 1989-02-07 1989-06-15 Siegler, Gustav, 7317 Wendlingen Schnellwechselfutter für Elektro- Handbohrmaschinen
DE4019760A1 (de) * 1990-06-21 1992-01-09 Glimpel Emuge Werk Schnellwechselfutter mit laengenausgleichsvorrichtung und achs-zentraler kuehlmittelzufuehrung
DE4037791C1 (de) * 1990-11-28 1992-08-06 C. & E. Fein Gmbh & Co, 7000 Stuttgart, De
US5951026A (en) * 1997-12-12 1999-09-14 Black & Decker Inc. Removable chuck
US6079716A (en) * 1997-12-12 2000-06-27 Black & Decker Inc. Removable chuck
DE20105763U1 (de) * 2001-04-02 2001-07-19 Röhm GmbH, 89567 Sontheim Bohrfutter mit einer Schnellkupplung

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6843484B2 (en) * 2002-07-08 2005-01-18 Monte L. Schroeder Quick change chuck
US20040004329A1 (en) * 2002-07-08 2004-01-08 The Boeing Company Quick change chuck
US20060061048A1 (en) * 2004-09-20 2006-03-23 Daniel Puzio Tool chuck with power take off feature
US7690658B2 (en) 2004-09-20 2010-04-06 Black & Decker Inc. Tool chuck with power take off feature
US7588398B2 (en) 2005-04-19 2009-09-15 Black & Decker Inc. Tool chuck with power take off and dead spindle features
US20070132196A1 (en) * 2005-04-19 2007-06-14 Daniel Puzio Tool chuck with power take off and dead spindle features
US20070170664A1 (en) * 2005-09-16 2007-07-26 Daniel Puzio Pto selector mechanism for parallel axis transmission
US20070158086A1 (en) * 2005-09-16 2007-07-12 Daniel Puzio Chuck with internally threaded jaw in a pto application
US7537421B2 (en) 2005-09-16 2009-05-26 Black & Decker Inc. Dead spindle PTO with compliant grounding mechanism
US7547165B2 (en) 2005-09-16 2009-06-16 Black & Decker Inc. PTO selector mechanism with brake
US20070170665A1 (en) * 2005-09-16 2007-07-26 Daniel Puzio Dead spindle pto with compliant grounding mechanism
US7588399B2 (en) 2005-09-16 2009-09-15 Black & Decker Inc. PTO selector mechanism for parallel axis transmission
US7645101B2 (en) 2005-09-16 2010-01-12 Black & Decker Inc. Chuck with internally threaded jaw in a PTO application
US20070187908A1 (en) * 2005-09-16 2007-08-16 Daniel Puzio Pto selector mechanism with brake
EP2554319A1 (de) * 2011-07-06 2013-02-06 Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) Vorrichtungen für Austauschen einer Schweißspitze ; und Verfahren zum Austauschen einer Schweißspitze
US8950047B2 (en) 2011-07-06 2015-02-10 Kobe Steel, Ltd. Welding tip replacement apparatus, welding tip replacement system, and method for replacing welding tip
US20140346744A1 (en) * 2012-11-15 2014-11-27 Robert Bosch Gmbh Tool attachment for a hand-held machine tool
US10011008B2 (en) * 2012-11-15 2018-07-03 Robert Bosch Gmbh Tool attachment for a hand-held machine tool
US10442009B2 (en) 2017-01-31 2019-10-15 Black & Decker Inc. Drill with removable chuck
WO2024234217A1 (en) * 2023-05-15 2024-11-21 Jacobs Chuck Manufacturing (Suzhou) Company Ltd. Chuck with quick connect spindle interface

Also Published As

Publication number Publication date
CN1413786A (zh) 2003-04-30
GB2381226A (en) 2003-04-30
DE10151582A1 (de) 2003-04-30
CZ20023487A3 (cs) 2003-06-18
CN1258422C (zh) 2006-06-07
DE10151582B4 (de) 2013-11-14
JP2003175409A (ja) 2003-06-24
GB0222087D0 (en) 2002-10-30
TW568805B (en) 2004-01-01

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Legal Events

Date Code Title Description
AS Assignment

Owner name: ROHM GMBH, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:ROHM, GUNTER HORST;REEL/FRAME:012389/0585

Effective date: 20011122

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION